Mangle



(No Model.) 2 Sheets-Sheet 1. J. F. BALDWIN.

MANGLE.

Jig

Wi fnes ses, In 7/676 607,

-' UNITED STATES PATENT OFFICE.

JOSEPH F..BALDWIN, OF CAMBRIDGE, MASSACHUSETTS.

MANGLE.

SPECIFICATION forming part of Letters Patent No. 253,661, dated February 14, 1882. I Application filed April15, 1880. (No model.)

To all whom it may concern: I

Be it known that I, JOSEPH F. BALDWIN, of Cambridge, in the county of Middlesex and State of Massachusetts, have invented certain Improvements in Man gles, of which the following is a specification.

My invention relates to that class of mangles or ironing-machines in which the fabrics to be ironed are subjected to pressure upon a heated polishing-surface by passing them between said surface and the face of elastic pressure-rolls; and it consists, first, in the combination of two or more elastic-faced pressurerolls with a heated polishing'surface in such manner that the second pressure-roll has a greater surface-velocity than the first, and the third a greater surface-velocity than the second when more than two are employed, and

so on.

The invention also consists in an arrangement of feeding and arresting tables, in combination with the rolls, for the purpose of conyeniently operating the mangle.

' These improvements are all designed to facilitate the operation of ironing by the aid of a machine, and to perform such work more .efficiently than it can be done by any mangle now in use. In carrying them into effect I make use of an improved mangle having its parts so adjusted as to accomplish the desired end, and this I will now proceed to more specifically describe and claim.

My invention is fully set forth in the accompanying drawings, referred to hereinafter in this specification, of which they form a part, Figure 1 being a vertical transverse section, and Fig. 2 an end elevation, of a mangle embodying my invention. Fig. 3 is an end elevation, showing a modified form of construction. Fig. 4 is an elevation, and Fig. 5 a transverse section, of apressure-roll. Figs. 6, 7, 8, and 9 exhibit the effect of different adjustments of the polishing-roll, and Figs. 10 and 11 modifications of my invention, hereinafter explained.

In these figures the same letters refer to the same parts.

A represents the main supporting-frame of the mangle, B being the polishing-roll adapted to be heated, preferably by steam, as is usual in such machines. This roll is of metal having a polished exterior surface, and is journaled in bearings at a, and adapt-ed to be rotated in the direction indicated by the arrows by any suitable prime motor.

b b are the pressure-rolls--in this case two in number-arranged to bear against the periphery of the polishing-roll with even pressure throughout its entire length. The rolls are preferably of metal, of the construction hereinafter set forth, and covered on their exterior surface with suitable textile material of considerable thickness, so as to render them elastic under pressure. They are adapted to be rotated by the system of gearing shown in Fig. 2, power being applied to either of the pressure-rolls in any suitable manner and transmitted to the other roll by the intermediate cog-wheel, f, and the cog-wheels h h, attached respectively to the rolls 1) and b the wheel 71. being less in diameter than the wheel h, so that a greater surface-velocity is imparted to the roll b for the purpose hereinafter explained. ()r the roll b may be larger in diameter than the roll b, as shown in Fig. 1, and the rolls rotated by the action of the cog f on cogs of equal diameter, the desired greater surface-velocity of the roll I) being also attainable by this method of construction.

In Fig. 2 the rolls 1) b are journaled in fixed bearings, while the boxes a, forming the bearin gs of the polishing-roll B, are yielding, being adapted to be raised or lowered by the action of a wedge-bar, c. The extremities of this wedgebar rest upon spiral or other suitable springs, I), which regulate the pressure of the polishing-roll upon the pressure-rolls. The boxes a move in slots 19 in the frame of the machine, said slots being so arranged that the boxes or and the polishing-roll B are movable only in a plane which is practically equidistant from the centers of the first and last pressure-rolls, whereby the pressure of said first and last pressure-rolls is equalized under different adjustments of the polishing-roll. I

If desired, the wedge-bar 0 maybe supported rigidly by a set-screw, so that the polishingroll will not yield, as shown in Fig. 3, and in this case the pressure-rolls will be pressed by springs 8 against the polishing-roll.

ishing-roll heretofore employed in machines of In Fig. 9 is shown an adjustment of the p01-' this class. The roll B being movable in the line as 00 toward and from the axis of the roll I) only, in mangles so constructed the pressure of each pressure-roll varies. It is, however, very desirable that this pressure should be equalized as nearly as possible at all times; and this result is accomplished by my method of adjustmentjust explained and furtherillustrated in Figs. 6, 7, and 8, the polishing-roll being movable in the line a" m, which is equidistant from the centers of the'first and last pressure-rolls, and the pressure of said rolls is therefore equalized. The rolls I) b are also arranged at different levels upon the polishing roll B, so that the movement of articles from b to b will be assisted and facilitated bygravity, the surface of the polishing-roll forming an incline alongwhich the articles gravitate'or slide in their passage through the mangle.

E represents a feeding-table for receiving the articles to be-ironed before introducing them between therolls, while G is an arresting-table to receive them after their delivery by the roll W. The table G is provided with an inclined plane, G, to deflect the articles toward the front.

My improved construction of the elastic pressure-rolls is shown in'Figs; 4 and 5. The

'roll Rh'as flanges i t' at each extremity, and is provided with a longitudinal groove, 0, having a rod or bar, g, fitted in the same for the purpose of confining the scarfed end of astrip of textile material of considerable thickness which is wound about the roll, forming an elasticsurface yielding under pressure and readilyexpanding after the pressure is removed.

The foregoing description will render the operation of my invention readily apparent. The polishing-roll B being heated in the usual manner, it, together with the pressure-rolls 1) D is rotated. The articles are passed between the rolls 1) b and B from the feeding-table E, and are caught upon the arresting-table G within easy reach of the operator standing in front, and the operation may be repeated as many times as desired.

In machines of this description having two or more pressure-rolls rotatin g with uniform 1 velocity, the articles areapt to bulge away from the polishing-surface in their passage from roll to roll. The friction of the articles upon the polishing-roll also operates'to produce this effect. In my improved mangle, herein described, this friction is overcome by the varying heights of the pressure-rolls before described, while by my device of causing each pressure-roll to rotate with greater surface-velocity than the one next preceding it this difficulty is further overcome; for thearticles are held in tension or stretched by the action of the rolls in their passage from one roll to the next, and so kept perfectly smoothj'and fiat upon the heated polishing-surface, thus, rendering it' possible also to utilize the entire intermediate surface during the operation.

I do not limit myself to the form of polishing-surface previously referred to, as the leadin g level.

surface.

polishing-surface B and the elastic pressurerolls 1) b The roll b is given agreater surface-velocity thanv the roll I), exactly as in the form of my invention previously described. In this modification the feeding-table E and the arresting-table G are both level. The inclined surface B assists the passage of the articles from roll to roll by the aid of gravity. In Fig. 11 is shown another arrangement of the rolls, the polishing-surface in this case be- The advantages of my invention, so far as relates to the use of successive pressure-rolls each having greater surface-velocity than the one next preceding, may be secured under either of these forms as well as under the form first described. The form of apparatus shown in Fig. 11 is better adapted for starched goods having sufficient stiffness to enable them to-be propelled over the flat surface between the rolls 1) and b It will'be seen that my invention, so far as it relates to the different surface-velocities of the pressure-rolls, is not limited to the employment of two pressure-rolls, as any desired number may be employed, each after the first having a slightly increased surface-velocity over the one next preceding. By my invention the feed-rolls have increasing velocities and work against a metallic heated polishing- By the friction of these feed-rolls on the goods the goods are kept stretched and under tension against the heated polishingsurface, whereby there is insured the uniform 1 polishing and heating of all parts of the arence between my invention and what has preceded it is that by my machine the goods are stretched over a heated polishing-surface by cloth covered feed-rolls having varying ve locities, the polishing-surface being of large unbroken extent, the goods being stretched and polished evenly and uniformly. Heretofore it has been impossible to stretch the goods between the rolls or over the surface ofthe1ow= er roll, each polishing-surface after the first in former machines slipping on the goods without stretching, and so polishingby such slipping,

IIO

10 greater surface-velocities, whereby the fabrics are stretched over and held closely against the heated polishing-surface, the elastic facings of the pressure-rolls facilitating the grasping and feeding of the fabrics, as setforth.

2. In a mangle, the combination of the polishing-surface, the pressure-rolls, a feedingtable to receive the articles to be ironed, the table G to arrest the ironed articles, and the inclined plane G on said table to deflect the articles to the front, all constructed and arranged as shown.

Intestimony whereof Ihave signed my name to this specification, in the presence of two subscribing witnesses, this 10th day of April, A. D. 1880.

JOSEPH F. BALDWIN.

Witnesses:

H. G. VVADLIN, 0.13. BROWN. 

